Nitrogen

Where can nitrogen fixing bacteria be found (2 right answers)

• Free living in the soil

• under the leaves of flowering plants

• in the atmosphere

• living on the nodules of certain plants

Tags

NGSS.MS-LS2-3

How do animals get the nitrogen they need? (2 right answers)

• From the air they breathe

• From the water they drink

• From the plants they eat

• From the meat they eat

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

What is the process of combining nitrogen gas with other elements to make nitrogen into usable compounds?

• nitrogen composition

• ammonia 

• nitrogen fixation

• denitrification

Organisms that convert fixed nitrogen back into nitrogen gas and release nitrogen gas back into atmosphere...

•  denitrifying bacteria

• fungi

• maggots 

• all of the above

Tags

NGSS.MS-LS2-3

What is the main difference between denitrification and the other three steps of the nitrogen cycle?

• Bacteria are not involved in the process of denitrification

• Denitrification changes nitrogen into a gaseous form

• Denitrification takes days; the other steps are instant

• Denitrification isn't necessary to complete the nitrogen cycle 

Plants and animals need nitrogen to make __________.

• Protein

• DNA

• Lipids

• Minerals

Tags

NGSS.MS-LS2-1

How do plants get the nitrogen they need?

• from the air

• from the soil or water in which they live

• from the Sun

• from broken-down rocks

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

The process by which waste and dead organisms release nitrogen back into the soil to be used again.

• Decomposition

• Fixation

• Denitrification

• Sublimation

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Plants and animals need nitrogen to make __________.

• Protein

• Carbohydrates

• Lipids

• Minerals

Tags

NGSS.MS-LS2-3

NGSS.MS-LS3-1

The constant movement of nitrogen through the biotic & abiotic parts of an ecosystem is known as the ______.

• water cycle

• nitrogen cycle

• carbon cycle

• life cycle

Tags

NGSS.MS-LS2-3